/usr/lib/plainbox-providers-1/checkbox/bin/wireless_ext is in plainbox-provider-checkbox 0.3-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #!/bin/sh
if lsmod | grep "80211" &> /dev/null ;
then
echo "Driver is using MAC80211"
if iwconfig 2>&1 | grep "IEEE 802.11" &> /dev/null ;
then
echo "Driver has loaded wireless extension"
exit 0
else
echo "No wireless module loaded"
exit 1
fi
fi
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